Meriam Process Technologies

M200DI Wet/Wet Differential Pressure Smart Manometer

Handheld, intrinsically safe smart-manometer for liquids with high accuracy for wet/wet differential pressure applications

Starting At
$2,080.00 CAD
Normally ships in 1-2 Weeks

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Meriam’s M200-DI handheld smart manometer for liquids brings high accuracy to wet/wet differential pressure applications such as wet gas measurement. Potentially corrosive or wet gasses are also handled by the M200-DI. Wetted parts are 316L Stainless Steel with Viton O-rings (consult factory for other materials). The M200-DI features NIST traceable accuracy of ± 0.05% FS (± 0.025% FS optional) independent of temperature effect from 23° - 122°F for Intrinsically Safe models. The accuracy statement is good from -4° - 122°F for general purpose models.

M200 pressure ranges are available from 0 – 1 PSID to 0 – 500 PSID. All ranges are rated for 1000 PSI common mode pressure. HI side overpressure rating is 3X F.S. while the LO side overpressure rating is 3X F.S. or 150 PSI, whichever is less. Optional flushing ports (pending) allow solvent clean-out of P1 and P2 ports or can be used to vent air from the connecting tubing of liquid applications.

Product comes standard with Viton O-Rings (consult Alpha for other options).  All models include a protective red boot, four (4) alkaline batteries, a user's manual, and N.I.S.T. certificate with data. 

Two manifold options are available: the standard manifold, and the flushing manifold (5/16-24 SAE/MS J1926 Flushing Ports with 316L SS plugs).

Intrinsically safe certification available for models less than 150 PSI.



• Impressive accuracy, with no temperature effect over operating range
• Handles wet/wet differential pressure applications
• Potentially corrosive or wet gasses are also handled
• Optional flushing ports available
• Can read in any of 11 pressure units
• Document up to 240 readings to reduce paperwork and field time
• Can be recalibrated in the field for zero, span and linearity

Accuracy 0.05% FS or optional 0.025% F.S.
Display 5 significant digit LCD (0.25 in high), 2 line x 16
alphanumeric characters with contrast adjustment and two-stage backlight
Battery Type Four (4) AA batteries
Battery Life Over 100 hrs of continuous use with auto shut-off feature
Process Connections 1/8 in female NPT, 316L SS, Hi and LO ports, 5/16 - 24 SAE/MS J1926 flushing ports with 316L SS plugs (2 each, optional)
Media Compatibility Isolated differential sensor for fluids
compatible with 316L SS and Viton
Pressure Limits 1,000 PSI
Engineering Unit Selection in of H2O (select 4C, 20C, or 60F), PSI, mm of Hg, in of Hg, mBar, Bar, kPa, kg/cm2, cm of H2O, user selectable scaling, sq. root
Storage Temperature -40C - 60C (-40F - 140F)
Operating Temperature -20C - 50C (23F - 122F) for IS models
Base Unit Materials Polycarbonate, permanently dissipative, ESD protection
Wetted Parts Materials 316L stainless steel, viton O-rings.
Consult Alpha for other O-ring materials.
Weight 30 oz
Dimensions 6.5 in x 3.6 in x 2.25 in
Other Features Field recalibration, auto record, leak test, dampening
Approvals / Certifications CE, Ex ia IIC T4, Class I,Div.1 Groups A,B,C,D, T4
Red protective boot for for M2 series manometers
Normally ships in 1-2 Weeks
$40.00 CAD
ABS plastic carrying case for M200, M201 and M202 manometers
Normally ships in 1-2 Weeks
$130.00 CAD
316 stainless steel 3 valve manifold with stainless steel tubing, to 3000 PSIG
Normally ships in 1-2 Weeks
$790.00 CAD